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Wang Z, Ma Q, Wu G, Zhong Y, Feng B, Huang P, Li A, Tang G, Huang X, Pu H. Bioactive α-Pyrone Analogs from the Endophytic Fungus Diaporthe sp. CB10100: α-Glucosidase Inhibitory Activity, Molecular Docking, and Molecular Dynamics Studies. Molecules 2024; 29:1768. [PMID: 38675588 PMCID: PMC11052008 DOI: 10.3390/molecules29081768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Two α-pyrone analogs were isolated from the endophytic fungus Diaporthe sp. CB10100, which is derived from the medicinal plant Sinomenium acutum. These analogs included a new compound, diaporpyrone F (3), and a known compound, diaporpyrone D (4). The structure of 3 was identified by a comprehensive examination of HRESIMS, 1D and 2D NMR spectroscopic data. Bioinformatics analysis revealed that biosynthetic gene clusters for α-pyrone analogs are common in fungi of Diaporthe species. The in vitro α-glucosidase inhibitory activity and antibacterial assay of 4 revealed that it has a 46.40% inhibitory effect on α-glucosidase at 800 μM, while no antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), Mycolicibacterium (Mycobacterium) smegmatis or Klebsiella pneumoniae at 64 μg/mL. Molecular docking and molecular dynamics simulations of 4 with α-glucosidase further suggested that the compounds are potential α-glucosidase inhibitors. Therefore, α-pyrone analogs can be used as lead compounds for α-glucosidase inhibitors in more in-depth studies.
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Affiliation(s)
- Zhong Wang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Qingxian Ma
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Guangling Wu
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Yani Zhong
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Bin Feng
- Huaihua Hospital of Traditional Chinese Medicine, Huaihua 418000, China;
| | - Pingzhi Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Aijie Li
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Genyun Tang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Xueshuang Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
| | - Hong Pu
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China; (Z.W.); (Q.M.); (G.W.); (Y.Z.); (P.H.); (A.L.); (G.T.)
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2
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Pu H, Peng D, Tang G, Ma Q, Huang H, Zhong Y, Long J, Huang X, Duan Y, Huang Y. Diaporpyrone E, an undescribed α-pyrone from the endophytic fungus Diaporthe sp. CB10100. Nat Prod Res 2023:1-7. [PMID: 37125816 DOI: 10.1080/14786419.2023.2204434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
An undescribed α-pyrone diaporpyrone E (1), and three known nucleotides, 5'-O-acetyl uridine (2), 5'-O-acetyl thymidine (3), and adenine (4), were identified from Diaporthe sp. CB10100, an endophytic fungus isolated from the medicinal plant Sinomenium acutum. The structure of 1 was determined by extensive analysis of its HRMS, 1D and 2D NMR spectroscopic data, as well as electronic circular dichroism calculations and comparison. The in vitro cytotoxic and antibacterial assays of 1 revealed that it has a 30.2% inhibitory effect on HepG2 cells at 50 μM, while no antibacterial activities against Staphylococcus aureus and Klebsiella pneumoniae at 64 μg/mL.
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Affiliation(s)
- Hong Pu
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan, China
| | - Dian Peng
- School of Pharmacy, Changsha Health Vocational College, Changsha, Hunan, China
| | - Genyun Tang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Qingxian Ma
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Huaiyi Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Yani Zhong
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Jiayao Long
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Xueshuang Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan, China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan, China
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3
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Xing DX, Song XS, Pan WC, Cui H, Zhao ZX. New chromone compounds from the marine derived fungus Diaporthe sp. XW12-1. Fitoterapia 2023; 164:105384. [PMID: 36473537 DOI: 10.1016/j.fitote.2022.105384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/27/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Four new chromone compounds diaporspchromanones A-C (1-3) and diaporspchromanone H (4), together with three known compounds (5-7) were separated from the marine derived fungus Diaporthe sp. XW12-1. The structures of the new compounds, including their absolute configurations, were elucidated by extensive spectroscopic analysis and the Mosher's ester method. Among them, diaporspchromanones A-C (1-3) possess a 3-substituted-chroman-4-one skeleton, which are rarely found in natural sources. In the bioassays, all compounds were evaluated for their inhibitory activity against lipopolysaccharide-activated nitric oxide (NO) production in RAW264.7 cells. Compounds 2 and 3 showed potent anti-inflammatory effects than the positive control (indomethacin, IC50, 70.33 ± 0.95 μM) (p < 0.05) with IC50 values of 19.06 ± 3.60 and 9.56 ± 0.18 μM, respectively.
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Affiliation(s)
- Dan-Xia Xing
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xian-Shu Song
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Wen-Cong Pan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Hui Cui
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China; Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, China.
| | - Zhong-Xiang Zhao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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Chen S, Guo H, Jiang M, Wu Q, Li J, Shen H, Liu L. Mono- and Dimeric Xanthones with Anti-Glioma and Anti-Inflammatory Activities from the Ascidian-Derived Fungus Diaporthe sp. SYSU-MS4722. Mar Drugs 2022; 20:51. [PMID: 35049907 PMCID: PMC8780748 DOI: 10.3390/md20010051] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 01/28/2023] Open
Abstract
Seven new xanthones, diaporthones A-G (1-7), together with 13 known analogues, including five mono- (8-14) and six dimeric xanthones (15-20), were obtained from the ascidian-derived fungus Diaporthe sp. SYSU-MS4722. Their planar structures were established by extensive spectroscopic analyses, including 1D and 2D NMR and high-resolution mass spectrometry (HR-ESIMS). The absolute configurations of 1-7 were clearly identified by X-ray crystallographic analysis and calculation of the ECD Spectra. Compounds 15-20 showed significant anti-inflammatory activity with IC50 values between 6.3 and 8.0 μM. In addition, dimeric xanthones (15-20) showed selective cytotoxicity against T98G cell lines with IC50 values ranging from 19.5 to 78.0 μM.
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Affiliation(s)
- Senhua Chen
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Heng Guo
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Minghua Jiang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Qilin Wu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Jing Li
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Hongjie Shen
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; (S.C.); (H.G.); (M.J.); (Q.W.); (J.L.)
- Southern Laboratory of Ocean Science and Engineering, Zhuhai 519082, China
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai 519082, China
- Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai 519082, China
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Chen CJ, Li D, Yu KY, Zhou MM. Generation of tryptamine derivatives through biotransformation by Diaporthe sp. J Asian Nat Prod Res 2021; 23:1164-1170. [PMID: 33432842 DOI: 10.1080/10286020.2020.1866560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
Three new tryptamine derivatives diaporols T-V (1-3) were isolated by adding tryptamine into the culture of Diaporthe sp., a fungus obtained from the leaves of Rhizophora stylosa. The structures of these compounds were elucidated by NMR spectroscopy and high resolution mass spectroscopic data. Among them, compound 1 showed moderate cytotoxic activity against SW480 cancer cell with IC50 9.84 μM.
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Affiliation(s)
- Chao-Jun Chen
- Department of Basic Medicine, School of Nursing, Wuxi Taihu University, Wuxi 214064, China
| | - Dan Li
- Department of Basic Medicine, School of Nursing, Wuxi Taihu University, Wuxi 214064, China
| | - Kang-Ying Yu
- Department of Basic Medicine, School of Nursing, Wuxi Taihu University, Wuxi 214064, China
| | - Ming-Ming Zhou
- Department of Basic Medicine, School of Nursing, Wuxi Taihu University, Wuxi 214064, China
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6
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Pu H, Liu J, Wang Y, Peng Y, Zheng W, Tang Y, Hui B, Nie C, Huang X, Duan Y, Huang Y. Bioactive α-Pyrone Derivatives from the Endophytic Fungus Diaporthe sp. CB10100 as Inducible Nitric Oxide Synthase Inhibitors. Front Chem 2021; 9:679592. [PMID: 34084766 PMCID: PMC8167431 DOI: 10.3389/fchem.2021.679592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/28/2021] [Indexed: 11/13/2022] Open
Abstract
Inducible nitric oxide synthase (iNOS) produces NO from l-arginine and plays critical roles in inflammation and immune activation. Selective and potent iNOS inhibitors may be potentially used in many indications, such as rheumatoid arthritis, pain, and neurodegeration. In the current study, five new compounds, including a dibenzo-α- pyrone derivative ellagic acid B (5) and four α-pyrones diaporpyrone A-D (9-12), together with three known compounds (6-8), were isolated from the endophytic fungus Diaporthe sp. CB10100. The structures of these new natural products were unambiguously elucidated using NMR, HRESIMS or electronic circular dichroism calculations. Ellagic acid B (5) features a tetracyclic 6/6/6/6 ring system with a fused 2H-chromene, which is different from ellagic acid (4) with a fused 2H-chromen-2-one. Both 2-hydroxy-alternariol (6) and alternariol (7) reduced the expression of iNOS at protein levels in a dose-dependent manner, using a lipopolysaccharide (LPS)-induced RAW264.7 cell models. Also, they decreased the protein expression levels of pro-inflammatory cytokines, such as tumor necrosis factor-α, interleukin-6 and monocyte chemotactic protein 1. Importantly, 6 and 7 significantly reduced the production of NO as low as 10 μM in LPS-induced RAW264.7 cells. Molecular docking of 6 and 7 to iNOS further suggests that both of them may interact with iNOS. Our study suggests that 6 and 7, as well as the alternariol scaffold may be further developed as potential iNOS inhibitors.
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Affiliation(s)
- Hong Pu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China.,Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, China
| | - Jianxin Liu
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Yeji Wang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Yuhui Peng
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Wanying Zheng
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Yang Tang
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Boping Hui
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Chunmei Nie
- School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, China
| | - Xueshuang Huang
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China
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Cai J, Zhou WY, Xu GM, Zhou XJ. [Research progress on natural products of fungi of Diaporthe sp.]. Zhongguo Zhong Yao Za Zhi 2021; 46:1717-1726. [PMID: 33982475 DOI: 10.19540/j.cnki.cjcmm.20201221.602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Diaporthe sp. fungi is one of the important sources of active natural products. Polyketides, alkaloids, terpenes, anthraquinones and other types of novel metabolic products are found from this genus, and many of them have significant anti-tumor, antibacterial, anti-hyperlipidemia, inhibition of pulmonary fibrosis, antioxidant and other biological activities. This paper reviewed source, structure and biological activity of natural products from Diaporthe sp. in the past two decades, and provided a reference for in-depth study of natural product of this genus fungus and innovative drug development.
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Affiliation(s)
- Jia Cai
- Hunan University of Traditional Chinese Medicine Changsha 410208, China
| | - Wen-Ying Zhou
- Guangzhou University of Chinese Medicine Guangzhou 510006, China
| | - Guang-Ming Xu
- Hunan University of Traditional Chinese Medicine Changsha 410208, China Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces Changsha 410208, China
| | - Xiao-Jiang Zhou
- Hunan University of Traditional Chinese Medicine Changsha 410208, China Hunan Engineering Technology Center of Standardization and Function of Chinese Herbal Decoction Pieces Changsha 410208, China
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Nagarajan K, Tong WY, Leong CR, Tan WN. Potential of Endophytic Diaporthe sp. as a New Source of Bioactive Compounds. J Microbiol Biotechnol 2021; 31:493-500. [PMID: 32627761 PMCID: PMC9705913 DOI: 10.4014/jmb.2005.05012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022]
Abstract
Endophytic fungi are symbiotically related to plants and spend most of their life cycle within them. In nature, they have a crucial role in plant micro-ecosystem. They are harnessed for their bioactive compounds to counter human health problems and diseases. Endophytic Diaporthe sp. is a widely distributed fungal genus that has garnered much interest within the scientific community. A substantial number of secondary metabolites have been detected from Diaporthe sp. inhabited in various plants. As such, this minireview highlights the potential of Diaporthe sp. as a rich source of bioactive compounds by emphasizing on their diverse chemical entities and potent biological properties. The bioactive compounds produced are of significant importance to act as new lead compounds for drug discovery and development.
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Affiliation(s)
- Kashvintha Nagarajan
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Woei-Yenn Tong
- Drug Discovery and Delivery Research Laboratory, Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia
| | - Chean-Ring Leong
- Drug Discovery and Delivery Research Laboratory, Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia
| | - Wen-Nee Tan
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia,Corresponding author Phone: +604-6534563 Fax: +604-6576000 E-mail:
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Chen Y, Zou G, Yang W, Zhao Y, Tan Q, Chen L, Wang J, Ma C, Kang W, She Z. Metabolites with Anti-Inflammatory Activity from the Mangrove Endophytic Fungus Diaporthe sp. QYM12. Mar Drugs 2021; 19:56. [PMID: 33498874 DOI: 10.3390/md19020056] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/25/2022] Open
Abstract
One new diterpenoid, diaporpenoid A (1), two new sesquiterpenoids, diaporpenoids B–C (2,3) and three new α-pyrone derivatives, diaporpyrones A–C (4–6) were isolated from an MeOH extract obtained from cultures of the mangrove endophytic fungus Diaporthe sp. QYM12. Their structures were elucidated by extensive analysis of spectroscopic data. The absolute configurations were determined by electronic circular dichroism (ECD) calculations and a comparison of the specific rotation. Compound 1 had an unusual 5/10/5-fused tricyclic ring system. Compounds 1 and 4 showed potent anti-inflammatory activities by inhibiting the production of nitric oxide (NO) in lipopolysaccharide (LPS)-induced RAW264.7 cells with IC50 values of 21.5 and 12.5 μM, respectively.
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10
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Abstract
Two new cytochalasins, deacetyl-19-epi-cytochalasin P1 (1), deacetyl-19,20-epoxycytochalasin D (2) were isolated from the endophytic fungus Diaporthe sp. RJ-47, along with four known compounds deacetyl-5,6-dihydro-7-oxo-19,20-epoxycytochalasin C (3), 19,20-epoxycytochalasin Q (4), 19,20-epoxycytochalasin C (5) and deacetyl-19,20-epoxy cytochalasin C (6). Their structures were unambiguously elucidated on the basis of the comprehensive analysis of extensive spectroscopic data. The antimicrobial effects of these compounds were evaluated.
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Affiliation(s)
- Qiong Zhang
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
| | - Zhi-Pu Huang
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
| | - Yu-Ying Zhao
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
| | - Qing Zhao
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
| | - Jian-Hong Chen
- The First Outpatient Department of 940 Hospital of PLA, Lan Zhou, P. R. China
| | - Wei-Guang Ma
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
| | - Xiao-Mei Zhang
- College of Basic Medicine, College of Chinese Material Medical, Yunnan University of Chinese Medicine, Kun Ming, P. R. China
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Yang X, Wu P, Xue J, Li H, Wei X. Cytochalasans from endophytic fungus Diaporthe sp. SC-J0138. Fitoterapia 2020; 145:104611. [PMID: 32437736 DOI: 10.1016/j.fitote.2020.104611] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/07/2020] [Accepted: 05/07/2020] [Indexed: 12/21/2022]
Abstract
Five new cytochalasans, diaporthichalasins D-H (1-5), along with five known cytochalasans (6-10) were isolated from solid cultures of the endophytic fungus Diaporthe sp. SC-J0138 isolated from the leaves of Cyclosorus parasiticus. Their structures were elucidated by analysis of spectroscopic data and theoretical calculations of electronic circular dichroism spectra. Compounds 1 and 5 showed noticeable cytotoxicity against human carcinoma A549, HeLa, and HepG2 cells. The structure-activity relationships in cytotoxicity were discussed for this group of compounds.
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12
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Abstract
The plant Sophora tonkinensis, possessed a range of active compounds, was traditionally used in the medicine of Chinese minorities. Endophytic fungi were isolated from this plant, of which the fungus Diaporthe sp. GDG-118 was fermented and extracted with methanol. The extract was screened by antifungal and antibacterial assays leading to the discovery of two new 21-acetoxycytochalasins (1-2) and five known cytochalasins (3-7). These two new compounds were elucidated by spectroscopic analyses, and further their absolute configurations were determined by the X-ray of compound 3 and comparing their experimental CD spectra. The antibacterial and antifungal effects of these compounds were evaluated. Compound 2 showed significant inhibitory activity against Bacillus anthraci and Escherichia coli with MIC value of 12.5 μg/mL, and 7 showed strong antifungal activity against Alternaria oleracea, Pestalotiopsis theae and Colletotrichum capsici with MIC values of 3.125, 1.56 and 1.56 μg/mL, respectively.
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Affiliation(s)
- Xishan Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Dexiong Zhou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Yan Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xiaobo Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Fei Cao
- College of Pharmaceutical Sciences, Hebei University, Baoding, P. R. China
| | - Yuyue Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Tuxiang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Zhaolong Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jun Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Ruiyun Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
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Luo X, Yang J, Chen F, Lin X, Chen C, Zhou X, Liu S, Liu Y. Structurally Diverse Polyketides From the Mangrove-Derived Fungus Diaporthe sp. SCSIO 41011 With Their Anti-influenza A Virus Activities. Front Chem 2018; 6:282. [PMID: 30050898 PMCID: PMC6052247 DOI: 10.3389/fchem.2018.00282] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/22/2018] [Indexed: 12/20/2022] Open
Abstract
Influenza A virus (IAV) is a severe worldwide threat to public health and economic development due to its high morbidity and mortality. Marine-derived fungi have been evidenced as a prolific source for the discovery of pharmacologically-active lead compounds. During the course of our search for novel bioactive substances from marine microorganisms, six new polyketides, including two octaketides (1-2), one chromone derivative (13), two highly substituted phthalides (17-18), and one α-pyrone derivative (21) along with 22 known congeners were isolated from a mangrove-associated fungus Diaporthe sp. SCSIO 41011. Their structures were determined by spectroscopic analysis and by comparison with literature data. And the absolute configurations were established according to the specific rotation or electron circular dichroism method. Antiviral evaluation results revealed that compounds 14, 15, 26, and 5-chloroisorotiorin displayed significant anti-IAV activities against three influenza A virus subtypes, including A/Puerto Rico/8/34 H274Y (H1N1), A/FM-1/1/47 (H1N1), and A/Aichi/2/68 (H3N2), with IC50 values in the range of 2.52-39.97 μM. The preliminary structure-activity relationships (SARs) are also discussed. These findings expand the chemical and bioactive diversity of polyketides derived from the genus Diaporthe, and also provide a basis for further development and utilization of chromone, xanthone, and chloroazaphilone derivatives as source of potential anti-viral chemotherapy agents.
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Affiliation(s)
- Xiaowei Luo
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jie Yang
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Feimin Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Chunmei Chen
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shuwen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
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14
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Tian W, Liao Z, Zhou M, Wang G, Wu Y, Gao S, Qiu D, Liu X, Lin T, Chen H. Cytoskyrin C, an unusual asymmetric bisanthraquinone with cage-like skeleton from the endophytic fungus Diaporthe sp. Fitoterapia 2018; 128:253-7. [PMID: 29859901 DOI: 10.1016/j.fitote.2018.05.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 11/21/2022]
Abstract
Cytoskyrin C (1), a new bisanthraquinone with asymmetrically cytoskyrin type skeleton, together with a known symmetrical analogue (+)-epicytoskyrin (2), were isolated from an endophytic fungus ARL-09 (Diaporthe sp.). Cytoskyrin C (1) featured an asymmetrically cage-like structural motif arising from the dimerization of anthraquinone monomers by three carbon‑carbon bonds 9a/3', 3/9a' and 1/1'. The structure and absolute configuration of compound 1 were determined by spectroscopic analyses, ECD calculation and exciton chirality methods. Moreover, a plausible biogenetic pathway of 1-2 was predicted. Their cytotoxicities against SMMC-7721 cell as well as effects on NF-κB signaling pathway were evaluated. 2009 Elsevier Ltd. All rights reserved.
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Tong WY, Leong CR, Tan WN, Khairuddean M, Zakaria L, Ibrahim D. Endophytic Diaporthe sp. ED2 Produces a Novel Anti-Candidal Ketone Derivative. J Microbiol Biotechnol 2018; 27:1065-1070. [PMID: 28297749 DOI: 10.4014/jmb.1612.12009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This study aimed to examine the anti-candidal efficacy of a novel ketone derivative isolated from Diaporthe sp. ED2, an endophytic fungus residing in medicinal herb Orthosiphon stamieus Benth. The ethyl acetate extract of the fungal culture was separated by open column and reverse phase high-performance liquid chromatography (HPLC). The eluent at retention time 5.64 min in the HPLC system was the only compound that exhibited anti-candidal activity on Kirby-Bauer assay. The structure of the compound was also elucidated by nuclear magnetic resonance and spectroscopy techniques. The purified anti-candidal compound was obtainedas a colorless solid and characterized as 3-hydroxy-5-methoxyhex-5-ene-2,4-dione. On broth microdilution assay, the compound also exhibited fungicidal activity on a clinical strain of Candida albicans at a minimal inhibitory concentration of 3.1 μg/ml. The killing kinetic analysis also revealed that the compound was fungicidal against C. albicans in a concentration- and time-dependent manner. The compound was heat-stable up to 70°C, but its anti-candidal activity was affected at pH 2.
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Affiliation(s)
- Woei Yenn Tong
- Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia.,School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Chean Ring Leong
- Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia
| | - Wen Nee Tan
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.,School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Melati Khairuddean
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Latiffah Zakaria
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Darah Ibrahim
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
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Shi C, Yuan L, Lin X, Zhao PJ. [Two new lactone derivatives from an endophyte Diaporthe sp. XZ-07 cultivated on Camptotheca acuminata]. Zhongguo Zhong Yao Za Zhi 2016; 41:1860-3. [PMID: 28895333 DOI: 10.4268/cjcmm20161016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Indexed: 11/17/2022]
Abstract
To study the secondary metabolites and their cytotoxic activities of an endophytic fungus Diaporthe sp. XZ-07cultivated on Camptotheca acuminata. Colum chromatography by RP-18, Sephadex LH-20 and silica gel was used to isolate and purify the chemical constituent. Two new compounds were isolatedand identified as 5-((E)-1,4,5-trihydroxyhex-2-enyl)furan-2(5H)-one(1)and(5Z)-5-(2,3,4,5-tetrahydroxyhexylidene)furan-2(5H)-one(2)by spectroscopic analysis. Cytotoxic activities were evaluated by MTT method. Compound 1 showed strong inhibitory activity against Human cervical carcinoma cell line Hela, and compound 2 showed strong inhibitory activity against breast cancer cell line MCF-7, Human neuroblastoma SH-SY5Y and Lewis lung carcinoma cells 3LL.
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Agusta A, Ohashi K, Shibuya H. Composition of the endophytic filamentous fungi isolated from the tea plant Camellia sinensis. J Nat Med 2006; 60:268-72. [PMID: 29435880 DOI: 10.1007/s11418-006-0038-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2005] [Accepted: 01/24/2006] [Indexed: 10/24/2022]
Abstract
It has been found by ribosomal DNA analysis that the endophytic filamentous fungi isolated from the tea plant Camellia sinensis (Theaceae) are composed of six groups; one Fusarium sp., one Penicillium sp., two Schizophyllum sp., and two Diaporthe sp..
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